SUITED FOR MOST STYLE GLOW PLUG THREADS AND FOR STANDARD THREAD REPAIR; SET INCLUDES: 5X REAMER FOR REAMING THE ORIGINAL THREAD (M8 X 1.0, M9 X 1.0, M10 X 1.0, M10 X 1.25, M12 X 1.25), 5X TAPS FOR THREADED SLEEVES (M8 X 1.0, M9 X 1.0, M10 X 1.0, M10 X 1.25, M12 X 1.25), 5X TAPS FOR RE-THREADING THE ORIGINAL THREAD (M8 X 1.0, M9 X 1.0, M10 X 1.0, M10 X 1.25, M12 X 1.25), ASSEMBLY TOOLS FOR INSERTING THE THREADED SLEEVES - 5X THREADED SLEEVES M8 X 1.0 (11 MM LONG), 5X THREADED SLEEVES M9 X 1.0 (11 MM LONG), 5X THREADED SLEEVES M10 X 1.25 (12 MM LONG), 5X THREADED SLEEVES M10 X 1.0 (12 MM LONG), 5X THREADED SLEEVES M10 X 1.0 (19 MM LONG), 5X THREADED SLEEVES M12 X 1.25 (12 MM LONG), 5X THREADED SLEEVES M12 X 1.25 (19 MM LONG), 5X THREADED SLEEVES M12 X 1.25 (26 MM LONG); MATERIAL: INSERTS: #2 STEEL, TAP: GCR15, SCREW: #35 STEEL, SLEEVE: #45 STEEL